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Circumference and Area of Circles
Contributed by: Dwiggins
  • 1. Diameter=3cm, circumference=?
A) 9cm
B) 9.4cm
C) 4.7cm
D) 6.2cm
  • 2. Radius=8cm, area=?
A) 1005.cm2
B) 804.2cm2
C) 201.1cm2
D) 50.3cm2
  • 3. Diameter=8cm, circumference=?
A) 12.6cm
B) 25.1cm
C) 201.1cm
D) 50.3cm
  • 4. Radius=1cm, circumference=?
A) 6cm
B) 3.1cm
C) 3cm
D) 6.3cm
  • 5. Diameter=16cm, area=?
A) 804.2cm2
B) 201.1cm2
C) 50.3cm2
D) 100.5cm2
  • 6. Radius=4cm, area=?
A) 25.1cm2
B) 50.3cm2
C) 201.1cm2
D) 12.6cm2
  • 7. Radius=3cm, area=?
A) 18.8cm2
B) 9.1cm2
C) 113.1cm2
D) 28.3cm2
  • 8. Radius=10cm, area=?
A) 31.4cm2
B) 314cm2
C) 3.14cm2
D) 78.5cm2
  • 9. Diameter=12cm, area=?
A) 113.1cm2
B) 37.7cm2
C) 452.4cm2
D) 18.8cm2
  • 10. Diameter=40cm, area=?
A) 125.7cm2
B) 628.3cm2
C) 62.8cm2
D) 1256.6cm2
  • 11. Radius=2.5, area=?
A) 19.6cm2
B) 15.7cm2
C) 78.5cm2
D) 7.9cm2
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